ATPase
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An ATPase is an enzyme that Catalyzes the Hydrolysis of Adenosine Triphosphate to Adenosine Diphosphate and a free Phosphate Ion, releasing energy that is used in the Cell.
- Context:
- It contains Integral Membrane Proteins.
- Example(s):
- Halobacterium salinarium http://www.uniprot.org/uniprot/O52027
- PMID 4960932: “An ATPase was newly identified on the inner face of the plasma membrane of the extremely halophilic archaebacterium Halobacterium halobium”
- Counter-Example(s):
- PMID 10361306:“A membrane-bound ATPase from Halobacterium saccharovorum was solubilized using sodium deoxycholate and Zwittergent 3-10 and purified by hydrophobic and ammonium sulfate-mediated chromatography”
- See: Cells.
References
2009
- (Wikipedia, 2009) ⇒ http://en.wikipedia.org/wiki/Bacterial_outer_membrane
- The bacterial outer membrane is found in Gram-negative bacteria. Its composition is distinct from that of the cytoplasmic membrane - among other things, the outer leaflet of the membrane include a complex lipopolysaccharide whose lipid portion acts as an endotoxin - and it is linked to the cell's peptidoglycan by Braun's lipoprotein.
- Porins can be found in this layer. [1]
- Gene Ontology http://amigo.geneontology.org/cgi-bin/amigo/term-details.cgi?term=GO:0009279
- Accession: GO:0009279
- Ontology: cellular component
- Synonyms
- exact: outer membrane (sensu Gram-negative Bacteria)
- exact: outer membrane (sensu Proteobacteria)
- exact: outer membrane of cell
- Definition
- A lipid bilayer that forms the outermost layer of the cell envelope; enriched in polysaccharide and protein; the outer leaflet of the membrane contains specific lipopolysaccharide structures. [source: GOC:mtg_sensu, ISBN:0135712254]